FB removed this meme citing misinformation. I've been warned, again lol
(media.greatawakening.win)
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Are you referring to the frames normal to the spars? That makes it far stronger than a box beam, so I don't know what your point would be.
It was ambiguous from your sentence structure whether you were referencing the building structure or the airplane structure. As you didn't clearly switch topics, I presumed you were continuing. I have reservations about calling the building structure a box beam. There were columns and floors throughout.
In a high speed collision, structural members can (and do) collapse like an accordion, and the result could be a consolidated thickness of 100 mm. That's only 4 inches.
I notice you completely duck the point about water being able to rip structures apart, even though it has absolutely no mechanical strength at all. This is because what is key to a structural failure is application of force, and this is represented by the oncoming momentum of the airplane (mass x velocity), just as it it with the oncoming momentum of a stream of water. This would be true, even when the airplane is shredded as through a french fries cutter.
You made reference to the image, to make a point that the wing had no resistance, so I was obliged to point out that the leading edge of wings are nowhere as strong as the structural members of a wing. Not irrelevant, if you are using the image to bolster your argument.
Sorry, but your ignorance about the effects of momentum is evident.